Table 3.

Regression analysis—predictors of volumetric visceral fat

	Normal weight (n = 28)		Obese (n= 41)
	R2	p-Value	R2	p-Value
Base model (controlling for age, sex, race, and Tanner)	0.28	0.28	0.23	0.14
Sagittal abdominal diameter (SAD)*	0.173	0.021	0.311	< 0.0005
After SAD
WC adds	0.028	0.33	0.006	0.50
WHR adds	0.000	0.92	0.012	0.36
BMI adds	0.031	0.30	0.017	0.26
BMI Z-score adds	0.025	0.36	0.062	0.028
Waist circumference (WC)*	0.181	0.018	0.261	< 0.0005
After WC
SAD adds	0.019	0.41	0.076	0.024
WHR adds	0.005	0.68	0.034	0.14
BMI adds	0.014	0.49	0.036	0.13
BMI Z-score adds	0.009	0.57	0.127	0.002
Waist–hip ratio (WHR)*	0.012	0.58	0.074	0.069
After WHR
SAD adds	0.161	0.029	0.268	< 0.0005
WC adds	0.175	0.022	0.221	< 0.0005
BMI adds	0.181	0.020	0.185	0.002
BMI Z-score adds	0.167	0.026	0.320	< 0.0005
Body mass index (BMI)*	0.179	0.019	0.259	< 0.0005
After BMI
SAD adds	0.025	0.35	0.089	0.014
WC adds	0.016	0.45	0.038	0.12
WHR adds	0.014	0.49	< 0.0005	0.89
BMI Z-score adds	0.002	0.80	0.190	< 0.0005
BMI Z-score*	0.162	0.026	0.388	< 0.0005
After BMI Z-score
SAD adds	0.035	0.27	0.005	0.54
WC adds	0.028	0.33	0.001	0.79
WHR adds	0.016	0.46	0.006	0.47
BMI adds	0.018	0.44	0.061	0.019

^*Regression model adjusted for age, sex, race, and Tanner stage.